A traveler will turn the wave into something to be reckoned with especially in heavy air. Worth every penny. Easy to install. Pick up one of these :http://www.harborfreight.com/hand-tools/hand-riveters/heavy-duty-17-1-2-half-inch-hand-riveter-with-collection-bottle-66422.html
Popping stainless rivets is the hardest part. This tool or the one from Northern tool makes it effortless. If you have a classic wave there is a workaround regarding the straps on the rear cross bar.
In 20-30's, move the traveler out about 6 inches, sheet in all the way (full rake on the mast block to block is a must) and the little plastic boat will take off like a hellion. I think it's the single best addition to the wave you could do. The biggest benefit is in heavy air sailing of course along with the rake. Promise, you'll have power boats chasing you up the lake. No joke. 15-25's is the sweet spot for the wave. Happy sailing!
https://www.youtube.com/watch?v=UN_hE6BGt0Ehttps://www.youtube.com/watch?v=09nF7TBNBkQ
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"Liquid Plumber's Edition Wave"
https://www.youtube.com/watch?v=Z78PozP9dc0